South Bend Clutch 2004-2023 Subaru WRX STI SUB1000 4140 Billet SMF SUB1000

Elevate your driving experience with the SBC SD1-1000R-11 Clutch Kit, expertly crafted for diesel engines. Designed for daily use, this Stage 1 clutch kit features a single full-face disc made from organic material to ensure smooth engagement and reduced vibration. Perfect for vehicles with slight modifications, it offers improved friction management with a 12.25-inch disc diameter for smoother starts and enhanced driving experience. This kit includes essential installation components (throw-out bearing, alignment tool, and a steel pilot bushing) but excludes the flywheel, offering flexibility in customization. The diaphragm pressure plate is modified to achieve a higher clamping force compared to stock, without significantly increasing the pedal effort.